>>> TYPE I
<<< 200 Type set to I
>>> PBSZ 0
<<< 200 PBSZ Command successful.
>>> PROT P
<<< 200 PROT Command successful.
>>> PASV
<<< 227 Entering Passive Mode (XXX,XXX,XXX,XXX,23,243)
>>> HELP
<<< 214- The following commands are recognized (* =>'s unimplemented).
<<<    USER    PORT    STOR    MSAM*   RNTO    NLST    MKD    CDUP
<<<    PASS    PASV    APPE    MRSQ*   ABOR*   SITE    XMKD*  XCUP*
<<<    ACCT*   TYPE    MLFL*   MRCP*   DELE    SYST    RMD    STOU
<<<    SMNT*   STRU    MAIL*   ALLO    CWD     STAT    XRMD*  SIZE
<<<    REIN    MODE    MSND*   REST*   XCWD*   HELP    PWD    MDTM*
<<<    QUIT    RETR    MSOM*   RNFR    LIST    NOOP    XPWD*  FEAT
<<<    AUTH    PBSZ    PROT    CCC
<<< 214 Direct comments to sysadm.
<<+ 214 The ALLO command is supported.
>>> ALLO 5
<<< 202 ALLO command ignored.
>>> STOR test
<<+ 555 Can't read command channel socket:
>>> QUIT
<<+ 555 Can't read command channel socket: